# Argus — Camera mount flange focal distance and adapter feasibility

For Argus, flange focal distance (mm) is 39; mount type is 38mm thread; throat diameter (mm) is 38, verified against its source on 2026-08-13.

- **Mount name:** Argus _(verified: appears in the quote below)_
- **Flange focal distance (mm):** 39 _(verified: appears in the quote below)_
- **Mount type:** 38mm thread _(verified: appears in the quote below)_
- **Throat diameter (mm):** 38 _(verified: appears in the quote below)_

## What the source says

> Argus | 38mm thread | 39 | 38 |

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### Flange focal distance (mm)

graphics.cornell.edu says flange focal distance (mm) is **39**, as of 2026-08-13.

> Argus | 38mm thread | 39 | 38 |

Source: https://www.graphics.cornell.edu/~westin/misc/mounts-by-register.html

graphics.cornell.edu says flange focal distance (mm) is **41.9**, as of 2026-08-13.

> Argus | 33mm thread | 41.9 | 33 |

Source: https://www.graphics.cornell.edu/~westin/misc/mounts-by-register.html


### Mount type

graphics.cornell.edu says mount type is **38mm thread**, as of 2026-08-13.

> Argus | 38mm thread | 39 | 38 |

Source: https://www.graphics.cornell.edu/~westin/misc/mounts-by-register.html

graphics.cornell.edu says mount type is **33mm thread**, as of 2026-08-13.

> Argus | 33mm thread | 41.9 | 33 |

Source: https://www.graphics.cornell.edu/~westin/misc/mounts-by-register.html


### Throat diameter (mm)

graphics.cornell.edu says throat diameter (mm) is **38**, as of 2026-08-13.

> Argus | 38mm thread | 39 | 38 |

Source: https://www.graphics.cornell.edu/~westin/misc/mounts-by-register.html

graphics.cornell.edu says throat diameter (mm) is **33**, as of 2026-08-13.

> Argus | 33mm thread | 41.9 | 33 |

Source: https://www.graphics.cornell.edu/~westin/misc/mounts-by-register.html


## Source

- https://www.graphics.cornell.edu/~westin/misc/mounts-by-register.html

Last verified: 2026-08-13. Review by: 2028-08-12.
Part of [Camera mount flange focal distance and adapter feasibility](https://referencesource.org/camera-lens-body-adapter-compatibility/).